Detent mechanism for door-closers and the like.



A. A. PAGE.

DETENT MEGHANISM FOR DOOR GLOSERS AND THE LIKE.

APPLICATION FILED DEO.13, 1912.

1,086,847. Patented Feb. 10, 1911 2 SHEETS-SHEET 1.

WITNESSES: INVENTOR.

A TTORNEYJI COLUMBIA PumuRAPI-I (10., WMHYNGTQN. D. C.

A. A. PAGE. DETENT MECHANISM FOR DOOR GLOSBRS AND THE LIKE.

APPLICATION FILED 111:0 13, 1912.

Patented Feb. 10, 1914.

2 SHEETS-SHEET 2.

III/I/lllllll INVENTOR: Q/if Q zi BY W] T NESSES:

V W ATTORNEW UNITED STATES PATENT OFFIQFL.

ALBERT A. PAGE, OF EAST HAVEN, CONNECTICUT, ASSIGNOR TO SARGENT & COMPANY, OF NEW YORK, N. Y., A CORPORATION OF CONNECTICUT;

DETENT MECHANISM FOR DOOR-CLOSERS AND THE LIKE.

Specification of Letters Patent.

Patented Feb. 1o, rare.

Application filed December 13, 1912. Serial No. 736,575.

To all whom it may concern Be it known that I, ALBERT A. PAGE, a citizen of the United States, residing in East Haven, county of New Haven, and State of Connecticut, have invented certain new and useful Improvements in Detent Mechanism for Door-Closers and the like, of which the following is a full, clear, and exact description.

This invention relates to an improved form of detent mechanism for door controlling apparatus such as door closers, door checks, and combined checks and closers. The improvements are applicable to any door controlling mechanism comprising a casing adapted for application to the door and having a shaft with a crank arm thereon adapted for connection with the door frame.

In certain types of door controlling mechanism of the kind mentioned, detent mechanism has been provided which consists of a yielding detent member on the crank arm cooperating with a rigid detent member more or less closely associated with the cap or cover plate of the casing, and in many instances it is necessary to adjust the cap or cover plate angularly with respect to the casing in order to vary the position in which the door will be held open.

The primary object of my invention is to provide an improved form of detent mechanism in which it is unnecessary to adjust the cap or cover plate and wherein one of the detent members is carried by a device separate and remote from the cover plate. It is also intended to simplify the construction to a maximum degree, to facilitate the adjustment of the mechanism to hold the door open in various positions, and to furnish a detent mechanism which may very readily be rendered inoperative when desired.

To these and other ends the invention consists in the novel features and combinations of parts to be hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a front elevation of a combined check and closer having my improvements, showing it applied to a door, with the door in its closed position, Fig. 2 is a top plan view of the parts shown in Fig. 1, illustratmg the action of the device in holding the door partly open, Fig. 3 is a similar plan view, showing the door opened as far as practicable, with the detent mechanism in its inoperative position, Fig. 4 is an enlarged front elevation of the check and closer, detached, the crank arm being shown in section, Fig. 5 is an end elevation of the parts shown in Fig. 4, Fig. 6 is a top plan view of the parts shown in Fig. 4:, Fig. 7 is an enlarged detail section on line 77 of Fig. 2, and Fig. 8 shows the detent member of the crank arm in side and end elevation.

Referring to the drawings, 10 indicates the casing of a combined check and closer applied to a door 11 by means of a bracket 12 and having its shaft or spindle 13 connected with the door frame 14 by means of a crank arm 15, link 16 and bracket 17. The cap or cover plate of the check and closer is shown at 18, and in the form shown the tension of the closing spring (not illustrated) 1s regulated by means of a tension collar 19 projecting upward beyond the cap 18.

In accordance with my invention I mount a stop member 20 on the shaft 13 at a point above the cap 18, in such a manner that it is freely rotatable with reference to the shaft and to the cap. This member 20, which is angularly adjustable with respect to the cap is provided with a rigiddetent member, such as a lug 21, to engage a yielding detent member 22 on the crank arm 1-5, and it may be held in different angular adjustments with respect to the cap or cover plate by means such as dog 23 on the member 20 adapted to engage in one of a series of peripheral notches 24 in the cap.

In the embodiment illustrated, the member 20 is mounted directly beneath the crank arm lo between the latter and the collar 19. It is shown as comprising a lever having an enlarged bearing portion 25 interposed between the collar and the crank arm and supported for rotation on said collar. lhe lug 21 projects from the bearing portion 25 at one side, and at the other side the dog23 is pivoted on a pin 26 to swing in a vertical direction. The dog 23 may be readily grasped and lifted by the fingers to disengage one of the notches 2d of the cap or cover plate, and as soon as the dog is free of the notch the former may be moved laterally in either direction in order to set the member 20 and its stop or detent lug 21 in another position with the dog 28 engaged with another one of the notches.

The yielding detent member 22 on the crank arm is illustrated as consisting of a sliding pin housed in a socket 27 directed lengthwise of the crank arm at the under portion thereof. A spring 28 confined. in the socket 27 normally holds the pin 22 in the projected position shown in Fig. 7, and the forward end of the pin 22 is beveled at opposite sides, as shown at 29, in order to cooperate wit-h the stop lug 21 in the manner now to be described.

Supposing that it is desired to hold the door 11 yieldingly in the partly open position shown in Fig. 2, the stop member 20 will be moved angularly to the position shown, where it is firmly held bythe engagement of its dog 23 in one of the notches 24. As the door is opened the detent member 22 will be swung relatively to the member 20 by the angular movement of the crank arm until one of the beveled sides 29 of the detentmember engages the detent lug 21. As the movement of the door is continued the detent member 22 will be pushed back in its socket by the lug 21 and said member will move across the lug and spring back into its initial position in engagement with the opposite side of the lug, to hold the door yieldingly open. The door will be firmly held in the position indicated under normal conditions, but may be released and shut by applying to it a moderate amount of pressure, as is usual in devices of this class. In the position shown in Fig. 2 the stop member 20 is locked in position by a notch at one end of the series of notches with which the casing is provided. This notch corresponds with the first position in which the door may be held open. As the member 20 is adjusted in a clockwise direction into cooperation with successive notches of the series, the door when opened to successively greater angles will obviously be held open at those angles. In the case illustrated the engagement of the stop member with the first notch will hold the door open at approximately 4-5 and when the stop member 20 is adjusted to the intermediate position shown in dotted lines in Fig. 6, the door will be held open at approximately 90. However, the location of the first notch relatively to the casing and the relative locations and spacing of all of the several notches may be varied as called for by conditions.

In Fig. 3, I have shown the stop member 20 adjusted to a position where it engages what may be termed the last notch of the series. In this position the door will never be opened sufiiciently wide in the ordinary course of events to engage the detent of the crank arm with the stop lug, or it may be impossible in fact for the door to be opened sufliciently to lock it in place under such conditions. lence the stop member is rendered inoperative, and it will be practically inoperative to all intents and purposes when it is engaged 111 any one of the several notches adjacent the last notch, owing to the fact that the door will be seldom opened to a greater extent, say than to about 100.

The combined check and closer shown in the drawings, is illustrated as applied to a right hand door, but it is applicable without alteration to a left hand door. When applied to a left hand door the operation of the detent mechanism will be the same as herein described except, of course, that what I have termed herein the first notch will be the last notch and vice versa.

It will be apparent that by the construction described the adjustable stop member carried by the door closer or other device is separate and remote from the cap or cover plate, and that no angular adjustment of the latter is necessary. Moreover, the stop member is of extremely simple form and it may be adjusted with great facility either to lock the door in the desired open position or to place said member in an inoperative position.

The form and arrangement of the detent members on the crank arm and stop mem ber respectively may be varied as desired, and in some cases it may be expedient to employ a relative arrangement of rigid and yielding detent members which is exactly the reverse of that herein described.

\Vithout limiting myself to the construction shown I claim:

1. The combination with a door controlling device having a casing, a shaft, and a crank arm on the shaft, of a detent member on the crank arm, a stop member to cooperate with said detent member rotatably mounted on said shaft at a point spaced from the casing and means to hold the stop member in different angular adjustments; substantially as described.

2. The combination with a door controlling device having a casing, a cap thereon, a

shaft pro jecting above the cap, and a crank arm on the shaft, of a stop member rotatable on the shaft and cooperating with the crank arm, means above the cap and separate therefrom acting as a support for said stop member, and means to engage said stop member with the cap in various angular adjustments; substantially as described.

3. The combination with a door controlling device having a casing, a cap, a shaft projecting upward beyond the cap, a crank arm on said shaft, and a collar projecting upward beyond the cap around the shaft, of a detent member carried by said crank arm, a stop member to cooperate with said detent member rotatably supported on said collar and means to hold the stop member in dif ferent angular adjustments; substantially as described.

4:. The combination with a door controlling device having a casing, a cap thereon, a shaft projecting upward beyond the cap, a collar projecting upward beyond the cap, a crank arm on the shaft, a stop member interposed between said collar and said crank arm and having a laterally projecting lug, means to detachably secure said stop member to said cap in a number of angular adj ustments, and a detent member on the crank arm to cooperate with the lug on said stop member; substantially as described. I 5. In a door closer, the combination of a casing, a cap on the casing having a series of peripheral notches a shaft projecting upward beyond the cap, a tension collar projecting upward beyond the cap, a crank arm on the shaft, a stop member interposed between the tension collar and the crank arm, a dog on said stop member to engage the notches of the cap and means on the crank arm to cooperate with said stop member in holding the door open in a number of angular adjustments; substantially as described.

6. The combination of a door controlling device having a casing with peripheral notches, a shaft projectin above the casing, a crank arm on the shat having a detent member, a stop member to cooperate with said detent member, rotatable on said shaft, and a pivoted depending dog on said stop member to engage said notches; substantially as described.

7. The combination of a door controlling device having a casing, a cap on said casing having a series of notches, a shaft projecting above the cap, a crank arm on the shaft having a detent member, a stop member on said shaft to cooperate with said detent member, and a dog on said stop member to engage said notches; substantially as described.

In witness whereof, I have hereunto set my hand on the 11th day of December, 1912.

ALBERT A. PAGE.

Witnesses:

E. M. HoRAN, FRANCES HOWARD.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

It is hereby certified that the residence of the assignee in Letters Patent No. 1,086,8i7, granted February 10, 1914:,upon the application of Albert A. Page, of East Haven, Connecticut, for an improvement in Detent Mechanism for Door- Closers and the Like, Was erroneously Written and printed New York, N. Y., Whereas it should have been written and printed New H'cwen, Connecticut, as Shown by the records of assignments in this oflice; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Ofiioe.

Signed and sealed this 2&th day of February, A. D., 1914.

[SEAL] J. T. NEWTON,

Acting Commissioner of Patents. 

